40578278346 has 32 divisors (see below), whose sum is σ = 92373321600. Its totient is φ = 13196187360.

The previous prime is 40578278341. The next prime is 40578278407. The reversal of 40578278346 is 64387287504.

40578278346 is a `hidden beast` number, since 4 + 0 + 578 + 27 + 8 + 3 + 46 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 40578278292 and 40578278301.

It is not an unprimeable number, because it can be changed into a prime (40578278341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9161806 + ... + 9166233.

It is an arithmetic number, because the mean of its divisors is an integer number (2886666300).

Almost surely, 2^40578278346 is an apocalyptic number.

40578278346 is an abundant number, since it is smaller than the sum of its proper divisors (51795043254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40578278346 is a wasteful number, since it uses less digits than its factorization.

40578278346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18328091 (or 18328085 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 40578278346 in words is "forty billion, five hundred seventy-eight million, two hundred seventy-eight thousand, three hundred forty-six".